[Regression] Real-time Kernel Build Failure
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Fix Released
|
High
|
Unassigned | ||
Jammy |
Fix Released
|
High
|
Unassigned |
Bug Description
[SRU Justification]
A new commit in the Jammy 5.15.0-29.30 kernel is causing a build failure for the real-time kernel.
After a bisect, I found this commit is causing the real-time kernel build failure:
dc66c1b8a2be1 ("x86/pkru: Remove useless include")
Commit dc66c1b8a2be1 was added in 5.16-rc1 and not cc'd to stable. It was picked into Jammy to enable AMX support. See bug 1967750.
The following commit resolves this regression by fixing up the includes:
35fa745286ac4 ("x86/mm: Include spinlock_t definition in pgtable")
Commit 35fa745286ac4 was merged into mainline 5.17-rc1.
[Fix]
35fa745286ac4 ("x86/mm: Include spinlock_t definition in pgtable")
[Test case]
Kernel builds are now working after picking this commit.
[Regression potential]
Low. The new commit is just including a header file.
Changed in ubuntu-realtime: | |
status: | New → In Progress |
importance: | Undecided → High |
assignee: | nobody → Joseph Salisbury (jsalisbury) |
summary: |
- Real-time Kernel Build Failure Regression + [Regression] Real-time Kernel Build Failure |
Changed in linux (Ubuntu Jammy): | |
importance: | Undecided → High |
assignee: | nobody → Joseph Salisbury (jsalisbury) |
status: | New → In Progress |
no longer affects: | linux (Ubuntu Kinetic) |
Changed in linux (Ubuntu Jammy): | |
status: | In Progress → Fix Committed |
Changed in linux (Ubuntu): | |
status: | In Progress → Fix Released |
Given this is SRU paperwork for Ubuntu linux package, moving the bug report over to Ubuntu linux package where it belongs.